77720114525 has 24 divisors (see below), whose sum is σ = 96904140000. Its totient is φ = 61833844800.

The previous prime is 77720114513. The next prime is 77720114561. The reversal of 77720114525 is 52541102777.

It is not a de Polignac number, because 77720114525 - 2²² = 77715920221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7902311 + ... + 7912139.

It is an arithmetic number, because the mean of its divisors is an integer number (4037672500).

Almost surely, 2^77720114525 is an apocalyptic number.

It is an amenable number.

77720114525 is a deficient number, since it is larger than the sum of its proper divisors (19184025475).

77720114525 is a wasteful number, since it uses less digits than its factorization.

77720114525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11549 (or 11544 counting only the distinct ones).

The product of its (nonzero) digits is 137200, while the sum is 41.

The spelling of 77720114525 in words is "seventy-seven billion, seven hundred twenty million, one hundred fourteen thousand, five hundred twenty-five".